Symmetry is when a shape or object looks exactly the same on both sides when you draw a line down the middle. This line is called the line of symmetry or axis of symmetry. Some shapes have many lines of symmetry, while others have none! Understanding symmetry helps us appreciate patterns and designs all around us.
Match the term with its definition:
| Term | Definition |
|---|---|
| 1. Line of Symmetry | A. Having the same shape, size, and position on both sides of a dividing line. |
| 2. Symmetry | B. A point around which a figure is symmetrical. |
| 3. Reflection | C. A line that divides a figure into two congruent halves that are mirror images of each other. |
| 4. Rotational Symmetry | D. A transformation that "flips" a figure over a line. |
| 5. Center of Symmetry | E. When a shape looks the same after a rotation (of less than 360°) around a central point. |
Symmetry is all around us! A shape has symmetry if it can be divided into two identical ______. The line that divides the shape is called the ______ of _______. Not all shapes have symmetry. If a shape looks the same after being rotated, it has _______ symmetry.
Look around your classroom or home. Find three objects that have symmetry. Describe the line(s) of symmetry for each object. Do any of these objects have rotational symmetry?
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